Dr. Henry L. Buijs Profile

Dr. Henry L. Buijs

CTO at ABB Analytical Measurement

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 17 November 2017 Open Access

Open Access

Paper

HVRM: a second generation ACE-FTS instrument concept

Jean-François Lavigne, Martin Larouche, Fabien Dupont, Guillaume Girard, James Veilleux, Henry Buijs, Raphaël Desbiens, Gaétan Perron, Frédéric Grandmont, Simon Paradis, Louis Moreau, Hugo Bourque

Proceedings Volume 10563, 1056345 (2017) https://doi.org/10.1117/12.2304247

KEYWORDS: Sun, Mirrors, Clouds, Sensors, Astronomical imaging, Interferometers, Image filtering, Imaging systems, Finite element methods, Earth's atmosphere

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The Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) is the main instrument on-board the SCISAT-1 satellite, a mission mainly supported by the Canadian Space Agency [1]. It is in Low- Earth Orbit at an altitude of 650 km with an inclination of 74E. Its data has been used to track the vertical profile of more than 30 atmospheric species in the high troposphere and in the stratosphere with the main goal of providing crucial information for the comprehension of chemical and physical processes controlling the ozone life cycle. These atmospheric species are detected using high-resolution (0.02 cm^-1) spectra in the 750-4400 cm^-1 spectral region. This leads to more than 170 000 spectral channels being acquired in the IR every two seconds. It also measures aerosols and clouds to reduce the uncertainty in their effects on the global energy balance. It is currently the only instrument providing such in-orbit high resolution measurements of the atmospheric chemistry and is often used by international scientists as a unique data set for climate understanding.

The satellite is in operation since 2003, exceeding its initially planned lifetime of 2 years by more than a factor of 5. Given its success, its usefulness and the uniqueness of the data it provides, the Canadian Space Agency has founded the development of technologies enabling the second generation of ACE-FTS instruments through the High Vertical Resolution Measurement (HVRM) project but is still waiting for the funding for a mission.

This project addresses three major improvements over the ACE-FTS. The first one aims at improving the vertical instantaneous field-of-view (iFoV) from 4.0 km to 1.5 km without affecting the SNR and temporal precision. The second aims at providing precise knowledge on the tangent height of the limb observation from an external method instead of that used in SCISAT-1 where the altitude is typically inferred from the monotonic CO2 concentration seen in the spectra. The last item pertains to reaching lower altitude down to 5 km for the retrieved gas species, an altitude at which the spectra are very crowded in terms of absorption. These objectives are attained through a series of modification in the optical train such as the inclusion of a field converter and a series of dedicated real-time and post-acquisition algorithms processing the Sun images as it hides behind the Earth. This paper presents the concepts, the prototypes that were made, their tests and the results obtained in this Technology Readiness Level (TRL) improvement project.

Proceedings Article | 17 November 2017 Open Access

Open Access

Paper

Interferometer scanning mechanisms and metrology at ABB: recent developments and future perspectives

Frédéric Grandmont, Henry Buijs, Julie Mandar

Proceedings Volume 10563, 105633X (2017) https://doi.org/10.1117/12.2304165

KEYWORDS: Interferometers, Metrology, Mirrors, Fourier transforms, Sensors, Astronomical imaging, Servomechanisms, Scanners, Space telescopes, Space operations

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Proceedings Article | 19 October 2016 Paper

Paper

Design and qualification of the interferometer for the GOSAT-2 spectrometer

Yan Montembault, Louis Moreau, Michel Roux, Henry Buijs, Marc-André Soucy

Proceedings Volume 10000, 1000009 (2016) https://doi.org/10.1117/12.2242139

KEYWORDS: Satellites, Interferometers, Climate change, Metrology, Modulation, Spectroscopy, Temperature metrology, Electronics, Laser metrology, Beam splitters

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Proceedings Article | 18 November 2014 Paper

Paper

The University of Wisconsin Space Science and Engineering Center Absolute Radiance Interferometer (ARI): instrument overview and radiometric performance

Joseph Taylor, Henry Revercomb, Fred Best, P. Jonathan Gero, Jerome Genest, Henry Buijs, Frederic Grandmont, David Tobin, Robert Knuteson

Proceedings Volume 9263, 926313 (2014) https://doi.org/10.1117/12.2069318

KEYWORDS: Calibration, Sensors, Climatology, Black bodies, Environmental sensing, Infrared radiation, Interferometers, Aerospace engineering, Temperature metrology, Far infrared

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Proceedings Article | 19 September 2013 Paper

Paper

ACE-FTS on SCISAT: 10th year on-orbit anniversary

Richard Lachance, Henry Buijs, Marc-André Soucy

Proceedings Volume 8867, 88670J (2013) https://doi.org/10.1117/12.2024985

KEYWORDS: Interferometers, Space operations, Sensors, Satellites, Signal to noise ratio, Fourier transforms, Earth's atmosphere, Ozone, Mirrors, Infrared radiation

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The Atmospheric Chemistry Experiment (ACE) is a mission on-board the Canadian Space Agency’s (CSA) SCISAT-1. ACE is composed of a suite of instruments consisting of an infrared Fourier Transform Spectrometer (FTS) coupled with an auxiliary imager monitoring aerosols based on the extinction of solar radiation using two filtered detectors (visible and near infrared). A suntracker is also included to provide fine pointing during occultation. A second instrument, MAESTRO, is a spectrophotometer covering the near ultra-violet to the near infrared. In combination, the instrument payload covers the spectral range from 0.25 to 13.3 μm. The ACE mission came about from a need to better understand the chemical and dynamical processes that control the distribution of ozone in the upper troposphere and stratosphere, with particular emphasis on the Arctic region. Measurement of the vertical distribution of molecular species in these portions of the atmosphere permits elucidation of the key chemical and dynamical processes. The ACE-FTS measures the vertical distributions of trace gases as well as polar stratospheric clouds, aerosols, and temperature by a solar occultation technique from low earth orbit. By measuring solar radiation at high spectral resolution as it passes through different layers of the atmosphere, the absorption thus measured provides information on vertical profiles of atmospheric constituents, temperature, and pressure. Detailed and sensitive vertical distribution of trace gases help to better understand the chemical processes not only for ozone formation and destruction but also for other dynamic processes in the atmosphere. The ACE/SCISAT-1 satellite was successfully launched by NASA on August 12, 2003, and has been successfully operating since, now celebrating its 10^th year on-orbit anniversary. This paper presents a summary of the heritage and development history of the ACE-FTS instrument. Design challenges and solutions are related. The actual on-orbit performance is presented, and the health status of the instrument payload is discussed. Potential future follow-on missions are finally introduced.

Proceedings Article | 19 November 2012 Paper

Paper

PCW/PHEOS-WCA: quasi-geostationary Arctic measurements for weather, climate, and air quality from highly eccentric orbits

Richard Lachance, John McConnell, C. Tom McElroy, Norm O'Neill, Ray Nassar, Henry Buijs, Peyman Rahnama, Kaley Walker, Randall Martin, Chris Sioris, Louis Garand, Alexander Trichtchenko, Martin Bergeron

Proceedings Volume 8533, 85330O (2012) https://doi.org/10.1117/12.974795

KEYWORDS: Fourier transforms, Ultraviolet radiation, Aerosols, Carbon dioxide, Environmental sensing, Satellites, Imaging systems, Near infrared, Climatology, Spatial resolution

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Proceedings Article | 9 November 2012 Paper

Paper

The University of Wisconsin Space Science and Engineering Center Absolute Radiance Interferometer (ARI): instrument overview and radiometric performance

Joe Taylor, Henry Revercomb, Henry Buijs, Frederic Grandmont, P. Jonathan Gero, Fred Best, David Tobin, Robert Knuteson

Proceedings Volume 8527, 85270P (2012) https://doi.org/10.1117/12.977533

KEYWORDS: Calibration, Sensors, Interferometers, Climatology, Black bodies, Environmental sensing, Temperature metrology, Fourier transforms, Mirrors, Far infrared

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Proceedings Article | 13 November 2010 Paper

Paper

The University of Wisconsin Space Science and Engineering Center Absolute Radiance Interferometer (ARI)

Joe Taylor, Henry Revercomb, Henry Buijs, Frederic Grandmont, P. Jonathon Gero, Fred Best, David Tobin, Robert Knuteson, Daniel LaPorte, Richard Cline, Mark Schwarz, Jeff Wong

Proceedings Volume 7857, 78570K (2010) https://doi.org/10.1117/12.869581

KEYWORDS: Interferometers, Climatology, Calibration, Sensors, Environmental sensing, Black bodies, Aerospace engineering, Temperature metrology, Infrared radiation, Climate change

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Proceedings Article | 3 September 2008 Paper

Paper

ACE-FTS instrument: after five years on-orbit

Louis Moreau, Marc-André Soucy, Henry Buijs, Ryan Hughes

Proceedings Volume 7082, 708212 (2008) https://doi.org/10.1117/12.796818

KEYWORDS: Signal to noise ratio, Sensors, Mirrors, Space operations, Fourier transforms, NOx, Infrared spectroscopy, Imaging systems, Signal detection, Satellites

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Proceedings Article | 26 September 2007 Paper

Paper

ACE-FTS instrument: after four years on-orbit

Marc-André Soucy, Henry Buijs, Serge Fortin, Ryan Hughes

Proceedings Volume 6678, 667812 (2007) https://doi.org/10.1117/12.730850

KEYWORDS: Signal to noise ratio, Fourier transforms, Space operations, Transmittance, Mirrors, Sensors, Interferometers, Infrared radiation, Imaging systems, Satellites

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Proceedings Article | 8 September 2006 Paper

Paper

ACE-FTS instrument: extending mission lifetime

François Châteauneuf, Marc-André Soucy, Henry Buijs

Proceedings Volume 6297, 62970E (2006) https://doi.org/10.1117/12.680059

KEYWORDS: Signal to noise ratio, Fourier transforms, Space operations, Transmittance, Sensors, Mirrors, Imaging systems, Infrared radiation, Satellites, Infrared spectroscopy

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Proceedings Article | 26 October 2004 Paper

Paper

On-orbit performance of the ACE-FTS instrument

Francois Chateauneuf, Serge Fortin, Henry Buijs, Marc-Andre Soucy

Proceedings Volume 5542, (2004) https://doi.org/10.1117/12.559951

KEYWORDS: Signal to noise ratio, Fourier transforms, Imaging systems, Transmittance, Sensors, Mirrors, Sun, Space operations, Visible radiation, Near infrared

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Proceedings Article | 8 March 2004 Paper

Paper

Evolution of FTIR technology as applied to chemical detection and quantification

Henry Buijs, Luc Rochette, Francois Chateauneuf

Proceedings Volume 5269, (2004) https://doi.org/10.1117/12.516519

KEYWORDS: FT-IR spectroscopy, Infrared spectroscopy, Chemical detection, Spectrometers, Infrared radiation, Spectroscopy, Mid-IR, Chemical species, Diamond, Crystals

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Proceedings Article | 24 September 1998 Paper

Paper

Fourier transform infrared spectrometry: a mature analytical method for industrial-level emission monitoring

Daniel Gravel, Allan Rilling, Henry Buijs, Vlastimil Karfik

Proceedings Volume 3414, (1998) https://doi.org/10.1117/12.323530

Proceedings Article | 31 January 1994 Paper

Paper

Evolution of spectrometric performance of FT-IR in relation to quantitative chemical composition and physical parameter determination

Raymond Roberge, Henry Buijs

Proceedings Volume 2089, (1994) https://doi.org/10.1117/12.166708

KEYWORDS: FT-IR spectroscopy, Absorbance, Spectroscopy, Stray light, Photoacoustic spectroscopy, Infrared spectroscopy, Control systems, Quantitative analysis, Chemometrics, Transmittance

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Proceedings Article | 31 January 1994 Paper

Paper

Study of isotopic composition in crystals by high-resolution spectroscopy of monoisotope impurity

N. Agladze, M. Becucci, Henry Buijs, S. Califano, Massimo Inguscio, Francesco Pavone, Marina Popova, Guerman Zhizhin

Proceedings Volume 2089, (1994) https://doi.org/10.1117/12.166804

KEYWORDS: Lithium, Ions, Spectroscopy, Crystals, Crystallography, Semiconductor lasers, Holmium, Spectral resolution, Laser spectroscopy, Tunable diode lasers

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Proceedings Article | 1 March 1992 Paper

Paper

Commercial cryogenic Fourier transform spectrometer for emission measurements of materials

Jean Giroux, Daniel Lamarre, J. McKinnon, Henry Buijs

Proceedings Volume 1575, (1992) https://doi.org/10.1117/12.56315

KEYWORDS: Cryogenics, Spectroscopy, Sensors, Fourier transforms, Interferometers, Infrared radiation, Data processing, Mirrors, Signal detection, Calibration

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Proceedings Article | 1 March 1992 Paper

Paper

Radiometric calibration and performance analysis of Fourier transform emission spectrometers

Daniel Lamarre, Jean Giroux, Henry Buijs

Proceedings Volume 1575, (1992) https://doi.org/10.1117/12.56316

KEYWORDS: Calibration, Black bodies, Signal to noise ratio, Spectrometers, Temperature metrology, Spectral calibration, Aerospace engineering, FT-IR spectroscopy, Fourier transforms, Liquids

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Proceedings Article | 1 March 1992 Paper

Paper

Spectroscopic requirements for optical characterization of semiconductor materials

Andre Villemaire, Abel Zacharie, Henry Buijs

Proceedings Volume 1575, (1992) https://doi.org/10.1117/12.56317

KEYWORDS: Spectroscopy, Semiconductor materials, Fourier transforms, Absorption, Spectroscopes, Semiconductors, Optical spectroscopy, Raman spectroscopy, Electrons, Crystals

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Showing 5 of 19 publications

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